I believe layer D would be composed of material with a plastic nature :)
Answer
Exploratorium Senior Scientist Paul Doherty explains why not—the orbit of the moon is tilted relative to the orbit of the Earth around the sun, so the moon often passes below or above Earth. At those times, it does not cross the line between the sun and the Earth, and therefore does not create a solar eclipse.
Just four countries — the Philippines, China, Japan and Bangladesh — are the targets of more natural disasters than anywhere else on Earth. They are the world's riskiest countries and are the most vulnerable to storms, floods, earthquakes, volcanoes, tsunamis, wildfires and landslides, among other calamities.
There was a massive dust storm named the Dust Bowlduring the great depression. <span>With the onset of the drought in 1930, overfarmed and overgrazed land began to blow away. Winds whipped across the plains, raising billowing clouds of dust. </span>